Finding the Fourth Proportional to 163,616.38, 225,655.41 and 115,378.90
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Solution
The fourth proportional to 163,616.38, 225,655.41 and 115,378.90 is: 159,127.55
Step by Step Solution
- Step 1: Write the proportion equation
163,616.38 : 225,655.41 = 115,378.90 : x - Step 2: Convert to fraction form
163,616.38/225,655.41 = 115,378.90/x - Step 3: Cross multiply
163,616.38x = 225,655.41 × 115,378.90 - Step 4: Simplify right side
163,616.38x = 26,035,872,984.85 - Step 5: Solve for x
x = 26,035,872,984.85/163,616.38 - Step 6: Final answer
x = 159,127.55
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.